import pandas as pd
import numpy as np
dataDic = {'Name':['Aice','Boal','Cindy','David'],'Sail':[2312.023,3421,8908,2230]}
df = pd.DataFrame(dataDic)
s = pd.Series(np.random.rand(4))
# print(df)
# print(df.sum())
# print(df.mean())
# print(df.std())
# print(s)
l = [1,2,3,'23',4,5,6]
for i in l:
    try:
        print(i**2)
    except Exception:
        print(Exception.args)
    continue

a = [['232','123','32'],[32,21,342]]
df = pd.DataFrame(a,columns=['aa','dd','ff'])
ddf = df['aa'].astype(float)/100
print(ddf)